422
FNCA52 TJSJ 301931
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SUN AUG 30 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-310800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 90 70 30
TEMP (24H TREND) 75 (-4) 90 (+1) 76 92
RH % (24H TREND) 97 (+12) 60 (-3) 92 57
WIND 20FT/EARLY(MPH) SE 13 SE 16 E 11 E 14
WIND 20FT/LATE(MPH) SE 16 SE 14 E 9 E 13
MIXING HGT(FT-AGL/MSL) 4260 4520
TRANSPORT WND (MPH) SE 16 E 14
VENT RATE (KT-FT) 59640 54240
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-310800-
SOUTHERN HILLS-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 80 90 60 40
TEMP (24H TREND) 71 (-4) 88 (+4) 72 90
RH % (24H TREND) 100 (+10) 64 (-5) 98 61
WIND 20FT/EARLY(MPH) SE 13 SE 13 E 9 E 11
WIND 20FT/LATE(MPH) SE 14 SE 12 E 9 E 11
MIXING HGT(FT-AGL/MSL) 5030 5550
TRANSPORT WND (MPH) SE 15 E 13
VENT RATE (KT-FT) 65390 61050
DISPERSION 5 5
DSI 6 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-310800-
NORTH COASTAL PLAINS-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 80 30 50
TEMP (24H TREND) 75 (-4) 91 (+4) 74 92
RH % (24H TREND) 100 (+10) 62 (-6) 97 61
WIND 20FT/EARLY(MPH) SE 17 SE 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 17 E 14 E 9 E 14
MIXING HGT(FT-AGL/MSL) 5480 5330
TRANSPORT WND (MPH) SE 13 E 14
VENT RATE (KT-FT) 60280 63960
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-310800-
NORTHERN HILLS-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 70 20 70
TEMP (24H TREND) 73 (-3) 90 (+6) 73 91
RH % (24H TREND) 100 (+5) 65 (-8) 98 65
WIND 20FT/EARLY(MPH) SE 11 SE 10 SE 9 E 11
WIND 20FT/LATE(MPH) SE 11 SE 12 E 6 E 12
MIXING HGT(FT-AGL/MSL) 5320 5630
TRANSPORT WND (MPH) SE 13 E 10
VENT RATE (KT-FT) 58520 50670
DISPERSION 5 5
DSI 5 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-310800-
WEST COAST-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 90 80 40 40
TEMP (24H TREND) 73 (-3) 92 (+3) 74 93
RH % (24H TREND) 100 (+5) 63 (-1) 98 62
WIND 20FT/EARLY(MPH) SE 14 SE 18 E 12 E 12
WIND 20FT/LATE(MPH) SE 18 SE 17 E 11 E 12
MIXING HGT(FT-AGL/MSL) 5200 5240
TRANSPORT WND (MPH) SE 16 E 9
VENT RATE (KT-FT) 72800 41920
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-310800-
EASTERN INTERIOR-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 90 60 50
TEMP (24H TREND) 73 (-4) 90 (+5) 73 91
RH % (24H TREND) 100 (+9) 63 (-7) 98 60
WIND 20FT/EARLY(MPH) SE 19 SE 14 E 12 E 10
WIND 20FT/LATE(MPH) SE 19 SE 12 E 11 E 12
MIXING HGT(FT-AGL/MSL) 5320 5330
TRANSPORT WND (MPH) SE 15 SE 14
VENT RATE (KT-FT) 69160 63960
DISPERSION 5 5
DSI 6 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-310800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 90 70 50
TEMP (24H TREND) 70 (-4) 86 (+6) 71 87
RH % (24H TREND) 100 (+6) 68 (-11) 100 65
WIND 20FT/EARLY(MPH) SE 16 SE 12 E 9 E 9
WIND 20FT/LATE(MPH) SE 16 SE 11 E 8 E 10
MIXING HGT(FT-AGL/MSL) 3620 4080
TRANSPORT WND (MPH) SE 15 E 15
VENT RATE (KT-FT) 47060 53040
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-310800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 80 50 70
TEMP (24H TREND) 69 (-4) 86 (+6) 69 87
RH % (24H TREND) 100 (+5) 69 (-8) 100 67
WIND 20FT/EARLY(MPH) SE 12 SE 12 SE 8 E 9
WIND 20FT/LATE(MPH) SE 13 SE 12 E 5 E 9
MIXING HGT(FT-AGL/MSL) 5970 6340
TRANSPORT WND (MPH) SE 12 SE 9
VENT RATE (KT-FT) 59700 50720
DISPERSION 5 5
DSI 5 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-310800-
CAYEY MOUNTAIN RANGE-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 80 70 50
TEMP (24H TREND) 71 (-3) 85 (+3) 72 86
RH % (24H TREND) 100 (+6) 70 (-3) 99 65
WIND 20FT/EARLY(MPH) SE 12 SE 12 E 8 E 9
WIND 20FT/LATE(MPH) SE 12 SE 10 E 6 E 9
MIXING HGT(FT-AGL/MSL) 4290 4070
TRANSPORT WND (MPH) SE 16 E 15
VENT RATE (KT-FT) 60060 52910
DISPERSION 5 5
DSI 6 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-310800-
VIEQUES-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 100 70 50 50
TEMP (24H TREND) 78 (-3) 91 (+3) 79 91
RH % (24H TREND) 88 (+3) 57 (-11) 84 56
WIND 20FT/EARLY(MPH) SE 20 SE 18 E 16 E 13
WIND 20FT/LATE(MPH) SE 20 SE 16 E 14 E 13
MIXING HGT(FT-AGL/MSL) 3590 3560
TRANSPORT WND (MPH) SE 18 E 16
VENT RATE (KT-FT) 57440 49840
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-310800-
CULEBRA-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 60 50 50
TEMP (24H TREND) 79 (-2) 91 (+4) 79 91
RH % (24H TREND) 92 (+6) 60 (-10) 86 59
WIND 20FT/EARLY(MPH) SE 21 SE 17 E 16 E 13
WIND 20FT/LATE(MPH) SE 21 SE 14 E 14 E 13
MIXING HGT(FT-AGL/MSL) 3240 3580
TRANSPORT WND (MPH) SE 17 E 16
VENT RATE (KT-FT) 48600 50120
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-310800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 90 60 20
TEMP (24H TREND) 75 (-2) 92 (+3) 76 93
RH % (24H TREND) 98 (+11) 59 (-2) 91 57
WIND 20FT/EARLY(MPH) SE 18 SE 20 E 17 E 17
WIND 20FT/LATE(MPH) SE 21 SE 19 E 14 G22 SE 18
MIXING HGT(FT-AGL/MSL) 4790 5360
TRANSPORT WND (MPH) SE 20 E 16
VENT RATE (KT-FT) 81430 75040
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-310800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 90 50 50 50
TEMP (24H TREND) 78 (-3) 89 (+4) 79 89
RH % (24H TREND) 91 (+5) 60 (-14) 87 60
WIND 20FT/EARLY(MPH) SE 20 SE 18 E 16 E 14
WIND 20FT/LATE(MPH) SE 21 SE 14 E 14 E 12
MIXING HGT(FT-AGL/MSL) 3160 3490
TRANSPORT WND (MPH) SE 18 E 20
VENT RATE (KT-FT) 50560 59330
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-310800-
ST CROIX-
330 PM AST SUN AUG 30 2026
TONIGHT MON MON NIGHT TUE
CLOUD COVER CLOUDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 40 30 50
TEMP (24H TREND) 78 (-2) 90 (+4) 79 90
RH % (24H TREND) 93 (+6) 62 (-8) 88 62
WIND 20FT/EARLY(MPH) SE 17 SE 18 E 16 E 13
WIND 20FT/LATE(MPH) SE 20 E 16 E 16 E 13
MIXING HGT(FT-AGL/MSL) 2910 4710
TRANSPORT WND (MPH) SE 21 E 18
VENT RATE (KT-FT) 52380 75360
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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